Cylindrical head welding stud bending inspection equipment

Abstract

The utility model provides cylindrical head welding stud bending inspection equipment which comprises a rack, a power device, a rotating frame and a clamping assembly, wherein the power device, the rotating frame and the clamping assembly are arranged on the rack. The lower part of the rotating frame is rotationally connected with the rack; the clamping assembly comprises an upper clamping head assembly and a lower clamping head assembly, and the upper clamping head assembly is arranged on the rotating frame and used for clamping the upper portion of a welding stud; the lower chuck assembly is arranged on the rack and used for clamping the lower portion of the welding stud. The power device is in driving connection with the upper portion of the rotating frame, and the power device is used for driving the rotating frame to rotate relative to the rack so that the rotating frame can drive the upper chuck assembly to move in the direction close to the welding stud or away from the welding stud. According to the cylindrical head welding stud bending inspection equipment provided by the utility model, the operation of a welding stud bending test can be facilitated, and the test accuracy and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test auxiliary equipment, in particular to a cylindrical head welding nail bending inspection device. Background Art

[0002] Cylindrical head weld nails are a type of high-strength and rigid connection fasteners and are key force-transmitting components at the steel-concrete joint. With the continuous improvement of the manufacturing scale and production level of bridge steel structures in my country, the application of weld nails is becoming more and more extensive.

[0003] According to regulations, after the cylindrical head rivet is welded, the porcelain ring around the cylindrical head rivet should be knocked off in time for appearance inspection. After the appearance inspection is passed, the cylindrical head rivet needs to be randomly inspected and subjected to bending test. The bending test is currently mostly carried out manually. The method is to hit the cylindrical head rivet with a hammer. When the rivet is bent about 30 degrees, the weld seam and heat-affected zone are not cracked to the naked eye. If it fails, the inspection is doubled. If it passes, the bent rivet needs to be restored with a hammer. The bending test method currently used in the existing technology has a high labor intensity and is affected by manual operation errors. It is difficult to ensure the precise control of the bending angle of the rivet, and the work efficiency is low. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a cylindrical head welding nail bending test device to improve the problems of poor bending test accuracy and low work efficiency in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a cylindrical head welding nail bending inspection device, comprising: a frame, a power device, a rotating frame and a clamping assembly respectively arranged on the frame;

[0007] The lower portion of the rotating frame is rotatably connected to the frame;

[0008] The clamping assembly includes an upper clamping assembly and a lower clamping assembly, wherein the upper clamping assembly is arranged on the rotating frame and is used to clamp the upper part of the welding nail; the lower clamping assembly is arranged on the frame and is used to clamp the lower part of the welding nail;

[0009] The power device is connected to the upper driving portion of the rotating frame, and is used to drive the rotating frame to rotate relative to the frame, so that the rotating frame drives the upper clamping head assembly to move toward or away from the welding nail.

[0010] Furthermore, the power device includes a hydraulic cylinder, which includes a sleeve and a piston rod with one end arranged in the sleeve, one of the sleeve or the piston rod is hinged to the upper part of the rotating frame, and the other is hinged to the frame; the power device and the clamping assembly are respectively located on opposite sides of the rotating frame.

[0011] Furthermore, the upper chuck assembly includes a first fixing seat and a first chuck provided on the first fixing seat, the first fixing seat is movably connected to the rotating frame, and the upper and lower positions of the first fixing seat relative to the rotating frame are adjustable, and the first chuck is used to clamp or loosen the welding nail;

[0012] The lower chuck assembly includes a second fixing seat and a second chuck provided on the second fixing seat. The second fixing seat is movably connected to the frame, and the upper and lower positions of the second fixing seat relative to the frame are adjustable. The second chuck is used to clamp or loosen the welding nail.

[0013] Furthermore, the first clamping head includes two first clamping arms, each of which is provided with a first clamping plate; the two first clamping arms are provided in a V-shape on the first fixing seat, with the opening of the V-shape facing the welding nail, and the two first clamping plates are used to move together in a direction toward the first fixing seat to clamp the welding nail, or move together in a direction away from the first fixing seat to loosen the welding nail;

[0014] The second clamping head includes two second clamping arms, each of which is provided with a second clamping plate; the two second clamping arms are arranged in a V shape on the second fixing seat, and the V-shaped opening is arranged toward the welding nail, and the two second clamping plates are used to move together in a direction close to the second fixing seat to clamp the welding nail, or move together in a direction away from the second fixing seat to loosen the welding nail.

[0015] Furthermore, the first clamping plate includes a first clamping portion and a first sliding portion that are connected to each other. The first sliding portion is provided in the corresponding first clamping arm and divides the inner cavity of the first clamping arm into a first cavity close to the first fixing seat and a second cavity away from the first fixing seat. The first cavity and the second cavity are respectively connected to a hydraulic source, and the hydraulic source is used to push the first sliding portion to move toward or away from the first fixing seat. The first clamping portion is used to clamp or loosen the welding nail.

[0016] The second clamping plate includes a second clamping portion and a second sliding portion that are connected to each other. The second sliding portion is arranged in the corresponding second clamping arm and divides the inner cavity of the second clamping arm into a third cavity close to the second fixed seat and a fourth cavity away from the second fixed seat; the third cavity and the fourth cavity are respectively connected to a hydraulic source, and the hydraulic source is used to push the second sliding portion to move toward or away from the second fixed seat; the second clamping portion is used to clamp or loosen the welding nail.

[0017] Furthermore, the cylindrical head weld stud bending inspection equipment also includes a drag slide; a slide groove is provided on the frame, a slider is provided at the bottom of the drag slide, the second fixed seat is installed on the drag seat, the slider is installed in the slide groove, and a hydraulic source is connected to the bottom of the slider, and the hydraulic source is used to push the slider up and down along the slide groove to adjust the upper and lower positions of the second fixed seat on the drag slide relative to the frame.

[0018] Furthermore, the rotating frame is a door-shaped frame, including two side door frames and a top frame connected between the tops of the two side door frames; a plurality of slots are respectively provided on the side where the two side door frames are close to each other, and the slots are arranged along the length direction of the side door frames, and the second fixed seat is respectively provided with connecting parts on both sides close to the two side door frames, and the connecting parts adjust the upper and lower positions of the first fixed seat relative to the rotating frame by abutting against the slots at different heights.

[0019] Furthermore, a first limiting rod and a second limiting rod are provided on the frame, and the first limiting rod and the second limiting rod are respectively located on both sides of the connection point between the rotating frame and the frame, and the first limiting rod is provided on the side close to the welding nail, and the side wall of the first limiting rod close to the side of the rotating frame is used to limit the rotation angle of the rotating frame.

[0020] Furthermore, a handle is provided on the frame.

[0021] Furthermore, a magnetic piece is provided at the bottom of the frame, and the magnetic piece is used to make the cylindrical head weld stud bending inspection device adsorb to the surface of the test piece.

[0022] According to the technical solution of the present invention, the cylindrical head weld stud bending test device of the present invention clamps the upper and lower portions of the stud respectively using clamping assemblies. The lower clamp assembly is mounted on a stationary frame, while the upper clamp assembly is mounted on a rotating frame and rotates with the rotating frame. When a power device drives the upper portion of the rotating frame to rotate relative to the frame, the upper clamp assembly pulls the upper portion of the stud to bend or restore it. The cylindrical head weld stud bending test device of the present invention has a simple overall structure, reduces manual operation, avoids the existence of manual operation errors, and effectively improves the efficiency and accuracy of the stud bending test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a working state of a cylindrical head welding nail bending inspection device according to an embodiment of the present invention (before the welding nail is bent or after it is restored).

[0024] Figure 2 This is a structural schematic diagram of another working state of the cylindrical head welding nail bending inspection device according to an embodiment of the present invention (when the welding nail is not bent).

[0025] Figure 3 This is a schematic diagram of the overall structure of a cylindrical head welding nail bending inspection device according to an embodiment of the present utility model.

[0026] Figure 4 This is a schematic diagram of the exploded structure of a cylindrical head welding nail bending inspection device according to an embodiment of the present utility model.

[0027] Figure 5 This is a schematic structural diagram of the upper chuck assembly (lower chuck assembly) of an embodiment of the present utility model.

[0028] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure.

[0029] Figure 7 This is a schematic diagram of the overall structure of the card slot structure of an embodiment of the present utility model.

[0030] Figure 8 This is a partial structural diagram of the card slot structure of an embodiment of the present utility model.

[0031] Figure 9 This is a schematic cross-sectional view of a cylindrical head welding stud bending inspection device according to an embodiment of the present invention.

[0032] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point A.

[0033] The meanings of the reference numerals in the accompanying drawings are:

[0034] 1. Frame; 11. Handle; 12. Rotating shaft; 13. First limiting rod; 14. Second limiting rod; 15. Magnetic element; 16. Drag slide; 161. Body; 162. Slider; 17. Slide groove;

[0035] 2. Rotating frame; 21. Side door frame; 22. Top frame; 23. Mounting slot;

[0036] 3. Power unit; 31. Sleeve; 32. Piston rod;

[0037] 4. Clamping assembly; 41. Upper chuck assembly; 411. First fixing seat; 412. First clamping arm; 4121. First cavity; 4122. Second cavity; 413. First clamping plate; 4131. First clamping portion; 4132. First sliding portion; 42. Lower chuck assembly; 421. Second fixing seat; 422. Second clamping arm; 4221. Third cavity; 4222. Fourth cavity; 423. Second clamping plate; 4231. Second clamping portion; 4232. Second sliding portion;

[0038] 5. Card slot structure; 51. Card slot plate; 511. Card slot position; 512. Sliding position; 52. Pull bar; 53. Handle; 54. Connecting shaft; 55. Movable block; 56. Connecting block;

[0039] 6. Welding nails. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] like Figure 1 and Figure 2As shown, the embodiment of the present invention is connected to a steel bridge for a bending test of a rivet 6. The diameter of the rivet 6 ranges from 13 to 25 mm, and the length ranges from 60 to 250 mm. The bending starting point of the rivet 6 during the bending test needs to be above the heat-affected zone of the weld. The height of the heat-affected zone will vary for rivets 6 of different diameters. Regarding the heat-affected zone, since the rivet 6 generates high temperatures during welding, the temperature increases the closer to the welding position. The high temperature of welding will produce a similar quenching effect on the rivet 6 itself, so the hardness of the rivet 6 in the heat-affected zone will be much higher than before welding. However, the bending position of the rivet 6 in the bending test is not at the root of the rivet 6. The traditional method of bending the welding nail 6 by manual hammering is not scientific. Since the metal has a certain elastic deformation ability after bending and deformation, although the bending angle of the welding nail 6 reaches the required 30° at the time of hammering, when the hammering force is withdrawn, the welding nail 6 will rebound, resulting in the bending angle of the welding nail 6 failing to meet the design requirements. At the same time, after the bending test is completed, the welding nail 6 needs to be reset. The manual hammering reset method cannot guarantee the accuracy and reliability of the reset of the welding nail 6, and the operation is extremely inconvenient.

[0043] like Figure 3 and Figure 4 As shown, the cylindrical head welding nail bending inspection device of the embodiment of the present invention includes: a frame 1, a power device 3, a rotating frame 2 and a clamping assembly 4 respectively arranged on the frame 1.

[0044] The lower part of the rotating frame 2 is rotatably connected to the frame 1.

[0045] The clamping assembly 4 includes an upper clamping assembly 41 and a lower clamping assembly 42. The upper clamping assembly 41 is arranged on the rotating frame 2 and is used to clamp the upper part of the welding nail 6; the lower clamping assembly 42 is arranged on the frame 1 and is used to clamp the lower part of the welding nail 6.

[0046] The power device 3 is connected to the upper driving portion of the rotating frame 2 , and is used to drive the rotating frame 2 to rotate relative to the frame 1 , so that the rotating frame 2 drives the upper clamping assembly 41 to move toward or away from the welding nail 6 .

[0047] like Figure 4 Specifically, in this embodiment, the frame 1 is a plate-shaped base structure. A handle 11 is further connected to the frame 1. The handle 11 is used to facilitate movement of the cylindrical head weld stud bending tester. In this embodiment, the ends of the handle 11 are respectively provided on the two side walls of the frame 1. In other embodiments, the specific structure and connection position of the handle 11 are not limited. The handle 11 and the frame 1 can be integrally formed or fixedly connected.

[0048] To ensure that the cylindrical head weld stud bending test device of this embodiment can firmly contact the surface of the test piece during operation, a magnetic member 15 can be provided at the bottom of the frame 1. Because the welding studs 6 of this embodiment are welded to the steel bridge, the magnetic member 15 can facilitate the fixing of the cylindrical head weld stud bending test device to the surface of the steel bridge. The magnetic member 15 can be, for example, an electromagnet.

[0049] like Figure 3 As shown, a rotating shaft 12 is provided on the two opposite side walls of the frame 1, and an axial hole (not shown) adapted to the rotating shaft 12 is provided at the lower part of the rotating frame 2. The axial hole of the rotating frame 2 is penetrated on the rotating shaft 12, so that the rotating frame 2 can rotate relative to the frame 1 around the rotating shaft 12.

[0050] like Figure 4 As shown, the rotating frame 2 of this embodiment is a portal-shaped frame, comprising two side door frames 21 and a top frame 22 connected between the tops of the two side door frames 21. The rotating frame 2 of this embodiment is integrally formed, but other forming methods can be freely selected in other embodiments. The lower portions of the two side door frames 21 are each provided with an axis hole for connecting to the rotating shaft 12.

[0051] like Figure 1 As shown, the power unit 3 and the clamping assembly 4 are respectively located on opposite sides of the rotating frame 2. The power unit 3 can be, for example, a hydraulic cylinder, which includes a sleeve 31 and a piston rod 32 with one end disposed in the sleeve 31. The piston rod 32 can be extended or retracted relative to the sleeve 31. One of the sleeve 31 or the piston rod 32 is hinged to the upper portion of the rotating frame 2, and the other is hinged to the frame 1. For example, in this embodiment, the sleeve 31 is rotatably connected to the top frame 22 of the rotating frame 2 via an articulated seat, the articulated seat being fixed to the top frame 22, and the end of the sleeve 31 is rotatably connected to the articulated seat. The piston rod 32 is rotatably connected to the frame 1 via another articulated seat being fixed to the frame 1, and the end of the piston rod 32 is rotatably connected to the articulated seat. When the piston rod 32 extends outward, the power device 3 can push the turret 2 to rotate toward the welding stud 6 to reset the welding stud 6. When the piston rod 32 retracts inward, the power device 3 can pull the turret 2 to rotate away from the welding stud 6 to bend the welding stud 6. The maximum extension distance of the piston rod 32 is selected according to actual needs. For example, in this embodiment, when the piston rod 32 is extended to the maximum distance, the turret 2 is rotated to a vertical position as much as possible (i.e., parallel to the direction of the welding stud 6 before bending). Alternatively, a certain reserve is set according to the rebound of the welding stud 6 (in this case, when the piston rod 32 is extended to the maximum distance, the top of the turret 2 is slightly tilted toward the welding stud 6) to ensure the accuracy of bending and resetting the welding stud 6.

[0052] To further improve the accuracy of bending and resetting, a first limiting rod 13 and a second limiting rod 14 can also be provided on the frame 1. The first limiting rod 13 and the second limiting rod 14 are respectively located on either side of the connection point between the turret 2 and the frame 1 (i.e., the rotating shaft 12 and both sides), and the first limiting rod 13 is provided on the side close to the welding stud 6. The side wall of the first limiting rod 13 close to the turret 2 is used to limit the rotation angle of the turret 2. The cross-section of the first limiting rod 13 in this embodiment is a rectangle with a rounded corner. The rounded corner is located at the bottom of the side wall of the first limiting rod 13 close to the turret 2. This rounded corner facilitates the rotation of the turret 2 and avoids interference or wear during the rotation of the turret 2. The distance between the first limiting rod 13 and the rotating frame 2 is smaller than the distance between the second limiting rod 14 and the rotating frame 2. The first limiting rod 13 of this embodiment is a cylindrical rod. When the rotating frame 2 is rotated to the vertical direction (the direction shown in the figure), that is, the rotating frame 2 is in the position before the welding nail 6 is bent or after it has been reset, at this time, the entire surface or bottom corner of the side wall of the first limiting rod 13 close to the side of the rotating frame 2 is in contact with the rotating frame 2, which can prevent the rotating frame 2 from rotating too much in the direction close to the welding nail 6, thereby further improving the working accuracy of the auxiliary tool.

[0053] like Figure 5 and Figure 6 As shown, the upper chuck assembly 41 of this embodiment includes a first fixed seat 411 and a first chuck provided on the first fixed seat 411. The first fixed seat 411 is movably connected to the rotating frame 2, and the upper and lower positions of the first fixed seat 411 relative to the rotating frame 2 are adjustable. The first chuck is used to clamp or loosen the welding nail 6.

[0054] The lower chuck assembly 42 includes a second fixing seat 421 and a second chuck provided on the second fixing seat 421. The second fixing seat 421 is movably connected to the frame 1, and the upper and lower positions of the second fixing seat 421 relative to the frame 1 are adjustable. The second chuck is used to clamp or loosen the welding nail 6.

[0055] In this embodiment, the upper and lower chuck assemblies 41 and 42 have identical structures. The first chuck of the upper chuck assembly 41 includes two first clamping arms 412, each of which is provided with a first clamping plate 413. Each first clamping arm 412 has a cavity defined therein. The two first clamping arms 412 are disposed in a V-shape on the first fixing seat 411, with the opening of the V-shape facing the welding stud 6. The two first clamping plates 413 are configured to move together toward the first fixing seat 411 to tighten the welding stud 6, or to move together away from the first fixing seat 411 to loosen the welding stud 6. The first clamping plate 413 includes a first clamping portion 4131 and a first sliding portion 4132 that are connected to each other. The first clamping portion 4131 and the first sliding portion 4132 are arranged perpendicular to each other. The first sliding portion 4132 is arranged in the corresponding first clamping arm 412, and divides the inner cavity of the first clamping arm 412 into a first cavity 4121 close to the first fixed seat 411 and a second cavity 4122 away from the first fixed seat 411; the first cavity 4121 and the second cavity 4122 are respectively connected to a hydraulic source, which is used to push the first sliding portion 4132 to move in a direction close to or away from the first fixed seat 411; the first clamping portion 4131 is used to clamp or loosen the welding nail 6. When the hydraulic source simultaneously injects hydraulic oil into the two first cavities 4121 (or the pressure in the first cavity 4121 is greater than the pressure in the second cavity 4122), the two first sliding portions 4132 simultaneously move away from the first fixed seat 411, increasing the space between the two first clamping portions 4131 and the two first clamping plates 413, thereby loosening the welding stud 6. When the hydraulic source simultaneously injects hydraulic oil into the two second cavities 4122 (or the pressure in the second cavity 4122 is greater than the pressure in the first cavity 4121), the two first sliding portions 4132 simultaneously move toward the first fixed seat 411, decreasing the space between the two first clamping portions 4131 and the two first clamping plates 413, thereby tightening the welding stud 6. In this embodiment, the first fixed seat 411 and the first clamping arm 412 are integrally formed.

[0056] The second clamp of the lower clamp assembly 42 includes two second clamping arms 422, each of which is provided with a second clamping plate 423; the two second clamping arms 422 are arranged in a V shape on the second fixed base 421, and the V-shaped opening is arranged toward the welding nail 6. The two second clamping plates 423 are used to move together in a direction close to the second fixed base 421 to clamp the welding nail 6, or move together in a direction away from the second fixed base 421 to loosen the welding nail 6. The second clamping plate 423 includes a second clamping portion 4231 and a second sliding portion 4232, which are connected to each other. The second sliding portion 4232 is disposed within the corresponding second clamping arm 422 and divides the inner cavity of the second clamping arm 422 into a third cavity 4221 close to the second fixed seat 421 and a fourth cavity 4222 away from the second fixed seat 421. The third cavity 4221 and the fourth cavity 4222 are respectively connected to a hydraulic source, which is used to push the second sliding portion 4232 toward or away from the second fixed seat 421. The second clamping portion 4231 is used to clamp or release the welding nail 6. The working principle of the second clamping head is the same as that of the first clamping head and will not be repeated here.

[0057] A plurality of slots are provided on the sides of the two side door frames 21 of the rotating frame 2 that are close to each other. The slots are arranged along the length direction of the side door frames 21. The second fixing seat 421 is provided with connecting parts on both sides close to the two side door frames 21. The connecting parts are adjusted to the upper and lower positions of the first fixing seat 411 relative to the rotating frame 2 by abutting against the slots at different heights.

[0058] Specifically, the card slot can be a simple plurality of card slot positions 511 or a group of card slot structures 5, and in this embodiment, it is a card slot structure 5. Figure 4 As shown, the two side door frames 21 are provided with mounting grooves 23 on the sides (inner sides) close to each other, and the mounting grooves 23 are provided with card slot plates 51, as shown in FIG. Figure 7 and Figure 8As shown, the slot plate 51 is a hollow structure with multiple slots 511 extending through it, as well as slides 512 connected to each slot 511. The slides 512 are arranged along the length of the slot plate 51. The slots 511 are inclined from the end closest to the slide 512 to the end further away from the slide 512, with the end further away from the slide 512 being lower than the end closer to the slide 512. A pull bar 52 is inserted through each slot plate 51. The tops of the two pull bars 52 are connected to form a handle 53. Pulling the handle 53 causes the pull bar 52 to move up and down along the slide 512. A movable block 55 is provided at the bottom of the pull strip 52, and a connecting shaft 54 is provided on the side wall of the movable block 55 facing the other side door frame 21, and a connecting block 56 is fixedly connected to the connecting shaft 54, and the first fixed seat 411 is fixed on the connecting block 56, and the connecting holes of the first fixed seat 411 are respectively penetrated on the corresponding connecting shaft 54. When the pull strip 52 is pulled up and down, the upper clamping assembly 41 can be driven to move together. At the same time, when the connecting shaft 54 moves to the connection between the card slot position 511 and the sliding position 512, the connecting shaft 54 can be moved toward the card slot position 511, so that the connecting shaft 54 enters the card slot position 511, thereby realizing the adjustment of the upper and lower positions of the upper clamping assembly 41 relative to the rotating frame 2.

[0059] like Figure 4 and Figure 9 As shown, the cylindrical head welding nail bending inspection device of this embodiment can also include a drag slide 16. Figure 10 As shown, the frame 1 is provided with a chute 17, and the drag slide 16 includes an upper seat body 161 and a slider 162 located below the seat body 161. The second fixed seat 421 is mounted on the seat body, and the slider 162 is mounted in the chute 17. The bottom of the slider 162 is connected to a hydraulic source, which is used to push the slider 162 up and down along the chute 17 to adjust the vertical position of the second fixed seat 421 on the drag slide 16 relative to the frame 1. For example, the hydraulic source can be directly connected to the hydraulic source through a pipeline at the bottom of the slider 162. Alternatively, for aesthetics and convenient connection, the pipeline can also be opened on the frame 1 at the bottom of the slider 162. When the hydraulic source introduces a certain amount of hydraulic oil into the cavity at the bottom of the slider 162, the pressure increases, causing the slider 162 to drive the second fixed seat 421 above (that is, the lower clamping head assembly 42) to move upward. When the hydraulic oil in the cavity at the bottom of the slider 162 decreases, the pressure decreases, causing the slider 162 to drive the lower clamping head assembly 42 to move downward. When the slider 162 moves to the desired position, the pressure at this time is maintained unchanged, so that the lower clamping head assembly 42 can be temporarily fixed, thereby achieving adjustment of its upper and lower positions relative to the frame 1.

[0060] The adjustment of the upper and lower positions of the upper clamping assembly 41 and the lower clamping assembly 42 is mainly to adapt to the clamping requirements of welding nails 6 of different lengths. At the same time, the clamping position avoids the heat-affected zone of the welding nail 6 to improve the accuracy of the test results.

[0061] The working principle of the cylindrical head weld nail bending test device of the embodiment of the present invention is as follows: place the cylindrical head weld nail bending test device on a working plane near the weld nail 6 to be tested, and after roughly determining the installation distance, extend the power device 3 to its longest position, adjust the upper and lower positions of the first fixing seat 411 and the second fixing seat 421 to a suitable height, and slide the first sliding part 4132 and the second sliding part 4232 outward to allow the weld nail 6 to enter between the clamping arm (the first clamping arm 412 or the second clamping arm 422) and the clamping plate (the first clamping plate 413 or the second clamping plate 423), and then adsorb the cylindrical head weld nail bending test device on the working plane through the magnetic part 15 to fix the auxiliary tool. Move the first sliding part 4132 and the second sliding part 4232 inward to clamp the upper and lower parts of the welding nail 6. After clamping, start the power device 3 to retract the piston rod 32 to the shortest distance, bend the welding nail 6 to a preset angle, and perform a bending test. After passing the test, start the power device 3 to extend the piston rod 32 to the longest distance, reset the welding nail 6 to a vertical state, and complete the test.

[0062] The cylindrical head weld stud bending tester of the present invention has a simple overall structure, making it easy to carry to the construction site. It features angle detection capabilities, preventing springback after bending, and improving the accuracy and efficiency of the bend test. The cylindrical head weld stud bending tester of the present invention can adapt to weld studs of varying angles and planes, bending the studs to a specified angle. The tool can adjust the starting point of the bend according to the stud model to avoid the heat-affected zone (HAZ). After testing, the device can reposition the stud. This makes it easy to use, saves labor, and improves work efficiency. The lower chuck assembly of the cylindrical head weld stud bending tester of the present invention is hydraulically adjustable, positioning it above the HZZ. This hydraulic adjustment ensures more stable performance. The upper chuck assembly can be adjusted vertically based on the length of the stud. A slot adjustment mechanism prevents the upper chuck assembly from slipping, facilitating position control and enhancing operational reliability. The first and second chuck arms each feature a V-shaped structure. The clamping plates are hydraulically controlled, allowing the chuck assembly to clamp studs of varying diameters, providing a wider range of applications. An electromagnet (magnetic part) is provided at the bottom of the auxiliary tool, which can be adsorbed onto the steel plate during operation, so that the auxiliary tool remains stable during operation.

[0063] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A cylindrical head welding nail bending inspection device, characterized in that: include: A frame, a power device, a rotating frame and a clamping assembly respectively arranged on the frame; The lower portion of the rotating frame is rotatably connected to the frame; The clamping assembly includes an upper clamping assembly and a lower clamping assembly, wherein the upper clamping assembly is arranged on the rotating frame and is used to clamp the upper part of the welding nail; the lower clamping assembly is arranged on the frame and is used to clamp the lower part of the welding nail; The power device is connected to the upper driving portion of the rotating frame, and is used to drive the rotating frame to rotate relative to the frame, so that the rotating frame drives the upper clamping head assembly to move toward or away from the welding nail.

2. The cylindrical head welding nail bending inspection equipment according to claim 1, characterized in that: The power device includes a hydraulic cylinder, which includes a sleeve and a piston rod with one end arranged in the sleeve. One of the sleeve or the piston rod is hinged to the upper part of the rotating frame, and the other is hinged to the frame. The power device and the clamping assembly are respectively located on opposite sides of the rotating frame.

3. The cylindrical head welding nail bending inspection device according to claim 2, characterized in that: The upper chuck assembly includes a first fixing seat and a first chuck provided on the first fixing seat, the first fixing seat is movably connected to the rotating frame, and the first fixing seat is adjustable in position up and down relative to the rotating frame, and the first chuck is used to clamp or loosen the welding nail; The lower chuck assembly includes a second fixing seat and a second chuck provided on the second fixing seat. The second fixing seat is movably connected to the frame, and the upper and lower positions of the second fixing seat relative to the frame are adjustable. The second chuck is used to clamp or loosen the welding nail.

4. The cylindrical head welding nail bending inspection device according to claim 3, characterized in that: The first clamping head includes two first clamping arms, each of which is provided with a first clamping plate; the two first clamping arms are provided in a V-shape on the first fixing seat, with the opening of the V-shape facing the welding nail, and the two first clamping plates are used to move together in a direction toward the first fixing seat to clamp the welding nail, or move together in a direction away from the first fixing seat to loosen the welding nail; The second clamping head includes two second clamping arms, each of which is provided with a second clamping plate; the two second clamping arms are arranged in a V shape on the second fixing seat, and the V-shaped opening is arranged toward the welding nail, and the two second clamping plates are used to move together in a direction close to the second fixing seat to clamp the welding nail, or move together in a direction away from the second fixing seat to loosen the welding nail.

5. The cylindrical head welding nail bending inspection device according to claim 4, characterized in that: The first clamping plate includes a first clamping portion and a first sliding portion that are connected to each other. The first sliding portion is disposed in the corresponding first clamping arm and divides the inner cavity of the first clamping arm into a first cavity close to the first fixing seat and a second cavity away from the first fixing seat. The first cavity and the second cavity are respectively connected to a hydraulic source, and the hydraulic source is used to push the first sliding portion to move toward or away from the first fixing seat. The first clamping portion is used to clamp or loosen the welding nail. The second clamping plate includes a second clamping portion and a second sliding portion that are connected to each other. The second sliding portion is arranged in the corresponding second clamping arm and divides the inner cavity of the second clamping arm into a third cavity close to the second fixed seat and a fourth cavity away from the second fixed seat; the third cavity and the fourth cavity are respectively connected to a hydraulic source, and the hydraulic source is used to push the second sliding portion to move toward or away from the second fixed seat; the second clamping portion is used to clamp or loosen the welding nail.

6. The cylindrical head welding stud bending inspection device according to claim 3, characterized in that: It also includes a drag slide; a slide groove is provided on the frame, a slider is provided at the bottom of the drag slide, the second fixed seat is installed on the drag seat, the slider is installed in the slide groove, and the bottom of the slider is connected to a hydraulic source, and the hydraulic source is used to push the slider to move up and down along the slide groove to adjust the upper and lower positions of the second fixed seat on the drag slide relative to the frame.

7. The cylindrical head welding stud bending inspection device according to claim 3, characterized in that: The rotating frame is a door-shaped frame, including two side door frames and a top frame connected between the tops of the two side door frames; a plurality of slots are respectively provided on the sides of the two side door frames close to each other, and the slots are arranged along the length direction of the side door frames, and the second fixing seat is respectively provided with connecting parts on both sides close to the two side door frames, and the connecting parts are adjusted to the upper and lower positions of the first fixing seat relative to the rotating frame by abutting against the slots at different heights.

8. The cylindrical head welding stud bending inspection device according to claim 1, characterized in that: The frame is also provided with a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are respectively located on both sides of the connection point between the rotating frame and the frame, and the first limiting rod is arranged on the side close to the welding nail, and the side wall of the first limiting rod close to the side of the rotating frame is used to limit the rotation angle of the rotating frame.

9. The cylindrical head welding stud bending inspection device according to claim 1, characterized in that: A handle is provided on the frame.

10. The cylindrical head welding stud bending inspection device according to claim 1, characterized in that: A magnetic piece is provided at the bottom of the frame, and the magnetic piece is used to make the cylindrical head welding nail bending inspection device adsorb on the surface of the test piece.

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